Camera



- July 14, 1942. c. F. OQBRlEN v 2,289,853

- mmm Filed April 1s. 1941 Inventor Attorwv 'menta .any 14. 1942VV UNITED. STATES PATENT OFFICE cama l OharlesF. OBrlen, Hollis, N. Y. Application Aprn 1s, 1941, serial No. 389,241

1 0mm. (ci, iis-s1) My invention relates to improvements f ln pocket cameras of the type forming the subject matter of my U. S. Letters Patent No. 2,204,819, dated June 18, 1940, and to which attention is invited.

By-way of premise, the camera of my patent,

supra, is characterized by a shutter carrying turn-table arranged for rotation through acomplete revolution to revolve the shutter into dlametrically opposite primary and secondary settings to take pictures alternately upon opposite 'sides of the longitudinal center of a illm.- Rotation of the turn-table from secondary back to .primary position is accomplished manually.

The principal object of my invention is to provide inexpensive, simply constructed means for automatically rotating the turn-table from secondary back to primary setting for the shutter quickly and positively, thereby speeding up operation of the camera and obviating unnecessary manual operations in connection with its use.

Another object is to provide means for the above purpose operative under a safety control vpreventing return to primary setting until a new stretch of lm is fed to replace the exposed section thereof.

To the accomplishment of the above, and subordinate objects presently appearing, a` preferred embodiment of my inventionA has been illustrated in the accompanying drawing, set forth in detail in the succeeding description, and defined in the claim appended hereto.

In said drawing- Figure `1 is a view in front elevation of a camera embodying my improvements.

Figure 2 is a view in rear elevation illustrating y the position of the parts in the primary setting of the shutter.

Figure 3 is a similar view illustrating the posi- 4 tion of the. parts on the secondary settingof the shutter, and

Figure 4 is a view in transverse section taken onthe line 4-4 of Figure 2.

Reference being had to the drawing by numerals, the camera with which my invention is concerned embodies a rectangular, open back, front casing section I designed to be closed by a suitable back cover section, not shown, said section I embodying al front wall 2. The front wall 2 comprises a circular turn-table, designated as a unit 3, which includes a pair of inner and outer discs 4, 5 secured together concentrically -v and rotatably mounted on the'front wall 2 by a suitable stud 6 disposed in the center of said of which is shown at 1, is provided in said discs 4, 5 in radially oiset relation to the stud 6 and with which a shutter assembly 8 correspondingly arranged on the opposite side registers. At one side of the section I is the usual pair of studs 8 in the top and bottom of the section I for detachably securing'a roll of illm II in the section in tle usual manner, the top stud being manipulatlve Abythe knob I2. At the opposite side of the section I is the usual ilxed stud I3 and the pull-out rewind stud I4 forthe vrewind reel I6 and which is manipulative by the nut I6. A pair of upper and lower apertures I1, I8 is provided in the front wall 2 in the vertical center thereof and upon opposite sides of the transverse center with -which the apertures 'l and hence the shutter '8 register in the primary and secondary settings of the shutter.

According to the instant invention, in the 'primary setting of the turn-table 3, and the shutter 8, the latter registers with the uppermost apertures I'I and inthe secondary with the lower one I8. 'I'he turn-table 3 is oscillated through a halt revolution to revolve the shutter wan. A pair of axially augned spernues, one

into said settings, respectively. A suitable stud I9 on the turn-.table 3 playing in the slot 20 in the front wall 2 establishes the settings of the shutter, 8. A friction brake is provided for retarding oscillation of the turn-table 3 and which g has the form of a leaf spring 2| xed at one end, as at 22, to the front wall 2 and having a brake shoe 23 on its other end bearing against the edge of the inner disc 4, said disc having a suitable edge stop notch 24 for seatingy the shoe inone setting of the shutter 8 and an edge cam stop shoulder 25 diametrically opposite the notch 24 for coaction with the shoe in the other setting of the shutter 8.

A- stud 26 on the disc 5 provides for manually rotating the turn-table 3' to revolve the shutter from primary to secondary setting. The following means are provided for automatically returning the shutter 3 to reestablish the primary setting of the shutter 8.

Fixed, as at 21, to the front wall 2 adjacent an upper corner of the section I is a coil spring 28 having its other end xed, as lat 29, to 'the inner disc 4 in proper location to be Wound around a hub 3,8 on the disc 4 when the `turn' tableis rotated to' revolve the shutter. from primary to secondary setting. Thus the turntable 3 is tensloned for rotation by the spring` is splined on'the stud M, as represented at 32,

and provided on one face with a pair of diametrically opposite cam lugs 33 adapted under each half rotation of the stud i4, in rewinding the reel I5, to engage and wipe past one end of a latch dog 34 pivoted intermediate its ends, as at 35, to the wall 2 to be rocked by said cams against the tension of a suitably arranged spring 36'. A hooked end 36 is provided on the latch dog 34 in the path of movement of'a catch 3l! `on the inner disc 4, said catch 3l under rotation of the turn-table 5 to locate the shutter into its secondary setting, coacting with the end 35 to cam the latch dog 34 upwardly and said end snapping over the catch 3i to hold the turntable against rotation by the spring 23. Obviously when the rewind stud M is rotated to feed an unexposed section of the film into proper position, the latch dog 34 Will be rocked to disengage the hooked end 35 from the catch 3i whereupon the spring 2d will return the turntable 3 into Iposition to reestablish the primary setting of the shutter ii.

The foregoing will, it is believed, suice to impart a clear understanding of my invention without further; explanation.

Manifest y the invention, as described, is susceptible of modication without departing from the inventive concept, and right is herein reserved to such modications as fall within the scope of the subjoined claim,

What I claim is: v

In a camera, a shutter carrying turn-table rotatable in opposite directions to revolve the shutter into primary and secondary settings, respectively, iilm rewinding means including a rotary rewind key,a spiral spring tensioned by rotation of the turn-table in one direction for reaction to rotate the turn-table in the 'opposite direction, releasable detent devices for blocking rotation of the turn-table vin said opposite direction released by operation of said key, and a leaf spring friction brake engaging one edge of the turntable and retarding rotation of the turn-table.

CHARLES F. OBRIEN. 

